x-9+x=-9

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Solution for x-9+x=-9 equation: 


Simplifying
x + -9 + x = -9

Reorder the terms:
-9 + x + x = -9

Combine like terms: x + x = 2x
-9 + 2x = -9

Add '9' to each side of the equation.
-9 + 9 + 2x = -9 + 9

Combine like terms: -9 + 9 = 0
0 + 2x = -9 + 9
2x = -9 + 9

Combine like terms: -9 + 9 = 0
2x = 0

Solving
2x = 0

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Divide each side by '2'.
x = 0

Simplifying
x = 0

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